Wow Dave, have never had the opportunity to port in Antigua and it appears that may not be on many cruise lines itinery with all the recent goings on there. I guess the lines have to do what they feel is best for them and the paying customers. I don't care where you are; in the US or some small island, no one should feel they can travel anywhere not knowing if they are really in a safe space. Not to say that trouble dosen't come looking for you.
There certainly many, many areas of each island paradise that just are not safe. Its such a shame to see these things happen.

Although I am trained in self-defense I always prefer the safety-in-numbers approach when in unfamiliar places. It doesn't always work but you have to go with the odds. Most attacks will be by one person and they do not want to deal with more than one victim.